Improvement in cross-heads and other slides



W. TUCKER. Cross-Head andOther Slides.

Patented July 3o, 187s.

UNITED STATES PATENTOHFICE..

wiLLiAM TUcKEHoF EAST BHOOKFIELD, Assieivoa 0F ONEHALF His RIGHT To JOHN e. AVERY, OFSPENGER, MASSACHUSETTS.

IMPROVEMENT IN CROSS-HEADS AND oTHERisLIDEs.

I Specification forming part of Letters PaicntNo'. 206,648, dated July 301-73; a'pphlicatioiilled-` April 5, 1878. Y

. To all whom it may concern:

Beit known that I, WILLIAM TUCKER, of

v East Brookfield, in the county-.of Worcester,

/Massachusetta have invented a new and useful Improvement in Cross-Heads and other Slides, of which the following is a full, clear, and exact speciiication:

\This invention relates to anti-frietioii devices; and consists in a novel mode of applying friction-rollers to slides of every description as a substitute for lubrication.

My saidinventioii consists, secondly, in the combination of aslide and its guide or guides having angular faces, presenting two sets of parallel hat surfaces at each edge of the slide, series of cylindrical rollers interposed between said surfaces respectively, and a single carrier for the adjacent series of rollers at eacl edge of the slide, said carrierV being conformed to said surfaces and supported between the saine ly said rollers, while the rollers of each carrier support the slide in two or more direc! tions, and are retained in positionby said carrier. l lMy said invention consists, thirdly, in a simple and etlicient roller-carrier for angular slides made of V shape in cross-section, drilled from each edge to .forni alteriiatin g roller-sockets, and completed by thin cap-bars attached to said edges after the rollers are inserted, as hereinafter more fullyv set forth.

Figure 1 of the accompanying drawing is a face view of a slide' and its guides provided withantifrictioii devices, illustrating this invention. Fig. 2 is a longitudinal section on the line 2 2, Fig. l. V`Fig.'3 is a transverse section on the lineB 3,Fig. 1. Fig. 4 is a partial transverse Vsection on the line 44, Fig. 2. Fi'g 5 is an edge view of one of the roller-carriers,

illustrating its construction. Figs. 6 and 7 are detail views Iof' one of the rollers.

Like letters of reference iiidicatecoriespoiiding parts iiithe several iigures. This invention in one or more of its parts is applicable to any slide ;F but it is particularly designed for cross-heads and other slides A, working between parallel guides B B.

Inthe illustration a pair of guides is shown adjustable within a strong frame, F, by'means of screws E D, said frame being an iron cast ing of trough shape, stitt'ened by deep transverse iianges, and perforated to receive'said screws. The screws E attach the guides `to the back.- ot' the frame, and aretapped into the f guides aild pass through slots in the back of the frame, as shown iii Fig. 4. The screws D are tapped into the sides of the frame, and opv erate |to press the respective guides toward each other, so as to take up loosencss and prevent rattling. f Guides may be thus adjusted in any frame or they may be cast oii or otherwise rigidly attached for all the purposes of the present invention.

venience, and in length, distance apart, an( dimensions generally they may be` of any re quiredsize. '.lfhelongitudinallinesoftheopposite faces of the guides must, however, be per-` fectly parallel, and I provide the saine with smooth facings z z, of hardened steel Vor its equivalent, which may be formed on 0r attached to the iron in any approved way. I

have attached them by rivets; but they' may be formed by case-hardening, welding, and other processes. The longitudinal lines of the opposite edges of the slide inustalso be perfectly 'parallelfand theseare provided with vlike smooth facings z2 z2, of hardened steel or its 4 equivalent. Between said hardened facings z z2, at each of the edges ot' the slide, a carrier, C,

is accommodated, containing friction-rollers y y2, oflike hardened metal, each of which is in solid contact with both of said faciiigs, with its axis at right angles to .the lineV of sliding motion and tree to rotate.

The rollers are kept in place by the carriers,

fand, in turn, support the carriers out of contact with the said facings, wliilesaid rollers,

They may also be hori-- 'zonta1, vertical, or inclined, according to coiithe former is only .made f' V shape,

shape and dimensions is inY combination with said faeings, preclude friction betweenA the slide and its gui es'by providing a durable rolling mediumy b tween them.

The Amotion of the carriers G is with the slide A, but in either given direction the motion of half' that of tho latter, owing to the difference between the motion of the axes and the peripheres of the rollers. This is illustrated by arrows c b and dotted linesc d in Fig. 1. There being two series ofrollers, y y2, at each edge of the slide in the illustration, they\ are so located as to alternate, as shown in Fig. 2.

The edges of the slide and the matchingtacesofthe guides, with their faeings z z2, are as shown in Figs. 3 and 4, so as to cause the rollers to support the slide yagainst motion in every direction, except longitudinal motion, without obstructing the-face of the slide. Theearriers are made of corresponding shape, and the two'hseries of rollers ot each carrier are accommodated in itsl respective flat portions. n p The method of construct-ing the carriers C is illustrated in Fig. 5. A bar of the proper first made by casting or rolling., and its longitudinal edges are planed, drilled to form roller-socketsw, and provided with rivet-.studs w w, as represented. A sufficient number of solid cylindrical rollers 4/ 3,2, Figs. G and 7 are provided, andin'serted in the sockets a', which are drilled to tit them, each roller projecting aslight distance beyond both' main surfaces of its carrier. Thin capbars 'a t are now attached lby the rivet-studs 'w or their equivalents, and this completes the carriers, which are thus adapted to be manufactured and supplied with their rollers with the utmost facility. l.

To reduce the sli ght friction between the rollers and the walls ot' their sockets, the earriers may, in some eases, be made of anti-friction material.

The V-shaped surfaces ot' slide and guides are not claimed as new, inl themselves consider'ed'; nor are they considered essential toy the invention as applied to 'slides workin g between parallel guides. Vertical rollers at the edges and =horizont-al rollers at bottom. may, in some eases, be preferable for horizontal slides, and any preferred arrangement maybe employed. Neither is it essential tha when two effective work. y Y

with the hardening of all the oaetmg surfaces, is likewise considered essential to sucscribed.

or Amore' series of rollers are uni ed at one angles to each With V-shaped edge they shall be at Vright other, as in the illustration.. surfaces a more acute may be adopted, if preferred.

The solid. journalless form of the rollers and the socketed form of the carrier are not claimed, per-se, as part ofthe kI )resent invention; but said featuresarejessential and important elements of the rst part of this invention, friction-rollers being old in otherwise like combinations applied to slide-valves. f I

' By entirely tional restraint, while at the same time my rollers are adapted-to be readily inserted altogethcr, and are kept out of contact with each other and in the proper positions for the most The solid form of the rollers,

cess, these features serving together to'prevent gletrusion or indentation, which would be alike fatal in either surface.

The following is what I claim as new land of my own invention, .and idesiiue to secure by Let-ters Patent, namely: l

'1. The combination of a slide and its guide or guides having' paral'lel'facings ot' hardened metal, lan interposed series of solid journalless friction-rollers of like hardened metal, and` i. carrier having a' socket or cell for each rollei and supported out of contact with saidfaeing by said rollers, substantially as herein de 2. The combination of a slide and its guidal or guides -ll'aving angula faces, presenting two sets of parallel hat surfaces at each edge of the slide, with series of cylindrical Irollers interposed between 'said surfaces, respectively, and a single carrier for the adjacent series ot' rollers at each edge of the slide, substantially as herein specified.

3. A roller-carrier for angular slides inadeof V shape in cross-section, with roller-sockets in each edge, sockets by cap-bars substantially as herein shown for the purpose set forth.

WILLIAM TUCKER.

attached to said edges,

4Vitnesses:

SAMUEL D. COLE, HENRY L. WHEELocK.

or a more y obtuseangle avoiding the employmeiit of I journals I insure*` the solid contact of each' lroller with the eoactin g surfaces without fricthe rollers bein gretained in said and described,- 

